Bioprospecting from plant waste composting: Actinobacteria against phytopathogens producing damping-off

Jurado, M.M.; Suárez‐Estrella, F.; López, M.J.; López-González, Juan A.; Moreno, J.

doi:10.1016/j.btre.2019.e00354

Cited by 13 publications

(5 citation statements)

References 18 publications

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“…The actinobacteria used in this work came from a collection previously characterized by their potential to be applied as agents of interest in agrobiotechnology (Jurado et al, 2019). Of all the strains tested, those belonging to the genus Microbacterium (A2, A4, and A6) and Cellulosimicrobium (A5 and A7) were not phytotoxic to cucumber seeds after being applied by biopriming with SA 0.5% as coating agent (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

“…Of all the strains tested, those belonging to the genus Microbacterium (A2, A4, and A6) and Cellulosimicrobium (A5 and A7) were not phytotoxic to cucumber seeds after being applied by biopriming with SA 0.5% as coating agent (Figure 2). Previous works demonstrated the potential of strains from the Microbacteriaceae family as outstanding microorganisms based on the production of interesting substances (volatile organic compounds, siderophores, chitinase enzymes, salicylic acids and hydrogen cyanide) and suppressive capacity against various phytopathogenic fungi related to damping-off and gray-mold diseases (Jurado et al, 2019;Suárez-Estrella et al, 2023). Similarly, isolates belonging to the genus Cellulosimicrobium have been reported as plant growth promoting agents and antagonists of phytopathogenic fungi such as Botrytis cinerea, Fusarium oxysporum and Verticillium dahliae due to their ability to solubilize phosphate, produce indoleacetic acid, siderophores and beneficial enzymes for plant growth and soil fertility as protease, chitinase, amylase and urease (Nabti et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…This last group, filamentous bacteria, is one of those receiving more attention due to its application as an agrobiotechnological tool based on the benefits provided by other areas of industrial microbiology. Actinobacteria, producers of endospores and a wide spectrum of antimicrobial compounds, are known to have antagonistic activity against plant pathogens and stimulate plant defense responses under biotic stress conditions (Jurado et al, 2019;Ebrahimi-Zarandi et al, 2022). Previous works have indicated the use of co-cultures of different strains of actinobacteria as responsible for the induction of the immune system of the plant, not only in vitro, but in vivo (Abbasi et al, 2022;Zeyad et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Biopriming of cucumber seeds using actinobacterial formulas as a novel protection strategy against Botrytis cinerea

Jurado

Suárez‐Estrella

Toribio

et al. 2023

Front. Sustain. Food Syst.

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This work highlights the ability of various actinobacterial formulas, to control the incidence of gray-mold caused by Botrytis cinerea in cucumber seedlings. Protocols applied aimed at the preliminary characterization of the actinobacterial collection and the biopolymers used as carriers were very useful for predicting their phytotoxic, phytostimulating and biopesticidal capacity. First, the phytostimulatory or phytotoxic potential of 3 biopolymers at 3 different concentrations and a collection of 10 actinobacteria were analyzed by calculating the germination index in cucumber seeds by seed dipping (biopriming). In general, two-member consortia and independent actinobacteria previously selected reached a phytostimulant effect on cucumber seedlings after their application by biopriming. Likewise, the selected actinobacteria were characterized, sole and in co-cultures, according to its ability to inhibit the growth of B. cinerea by dual culture bioassays. Finally, after selecting the most effective actinobacterial formulas, a preventive gray-mold bioassay was performed based on cucumber seed biopriming. The strains A5 and A7, in axenic and co-culture, showed to be the most efficient strains against the in vitro growth of B. cinerea. Seed biopriming strategy with actinobacterial formulas revealed a remarkable promoter effect in the early stages of plant development and after the infection with the phytopathogen fungus was remained. Definitely, the microbial formulas used in this work showed a phytostimulant and biopesticide character, laying the foundations for subsequent studies that allow a deeper scrutiny of the mechanisms of action that grant the specialization of the effect that occurs between beneficial microorganisms and specific plant hosts.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biopriming of cucumber seeds using actinobacterial formulas as a novel protection strategy against Botrytis cinerea

Jurado

Suárez‐Estrella

Toribio

et al. 2023

Front. Sustain. Food Syst.

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“… Triningsih et al (2022) found Micromonosporaceae in the sea can produce Paulomycin G, which is a new natural product with cytotoxicity to tumor cell lines ( Sarmiento-Vizcaíno et al, 2017 ). Jurado et al (2019) isolated 220 strains of Actinomycetes from soil compost, among which two strains under Microbacteriaceae were the best strains producing salicylic acid and chitin. These bioactive substances are indicators to describe the ability of strains in disease resistance and growth promotion.…”

Section: Discussionmentioning

confidence: 99%

Recombination of endophytic bacteria in asexual plant Ligusticum chuanxiong Hort. caused by transplanting

Xiao

Zhang

Wang

et al. 2023

PeerJ

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Background Long-term asexual reproduction can easily lead to the degradation of plant germplasm, serious diseases and insect pests, reduction of production and even catastrophic crop failure. “Mountain Breeding and Dam Cultivation” is the main cultivation mode of Ligusticum chuanxiong Hort., which successfully avoided the germplasm degradation caused by long-term asexual reproduction. The recombination of endophytic fungi of L. chuanxiong caused by off-site transplantation was considered to be an important reason for its germplasm rejuvenation. However, whether bacteria have the same regularity is not yet known. Methods In this study, we carried out the experiment of cultivating propagation materials of L. chuanxiong in different regions and transplanting them to the same region. High-throughput sequencing was performed to analyze the bacterial communities in L. chuanxiong and its soil. Results The results showed that after transplanting, the plant height, tiller number, fresh weight, etc. of L. chuanxiong in mountainous areas were significantly higher than those in dam areas. At the same time, significant changes had taken place in the endophytic bacteria in reproductive material stem nodes (Lingzi, abbreviated as LZ). The diversity and abundance of bacteria in dam area LZ (YL) are significantly higher than those in mountainous area LZ (ML). The relative abundance of bacteria such as Xanthobacteraceae, Micromonosporaceae, Beijerinkiaceae, Rhodanobacteria, in ML is significantly higher than YL, mainly classified in Proteobateria and Actinobacteriota. In addition, the abundance advantage of Actinobacteriota still exists in MY (underground mature rhizomes obtained by ML). Meanwhile, the bacterial community was different in different area of transplanting. The diversity of bacterial communities in dam soil (YLS) is significantly higher than that in mountain soil (MLS). MLS had more Acidobacteriota than YLS. Comparative analysis showed that 74.38% of bacteria in ML are found in MLS, and 87.91% of bacteria in YL are found in YLS. Conclusions We can conclude that the community structure of endophytic bacteria recombined after the transplantation of L. chuanxiong, which was related to the bacterial community in soils. Moreover, after transplanting in mountainous areas, LZ accumulated more potentially beneficial Actinobacteriota, which may be an important reason for promoting the rejuvenation of germplasm in L. chuanxiong. However, this hypothesis requires more specific experiments to verify. This study provided a new idea that off-site transplanting may be a new strategy to restore vegetative plant germplasm resources.

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“…Jurado et al found that the Microbacteriaceae family is capable of producing bioactive substances that actively participate in the control of plant pathogens. Moreover, the Microbacterium family can further stimulate the growth of plants and is an important microbiota with biocontrol potential (Jurado, et al 2019).…”

Section: Chthoniobacteraceaementioning

confidence: 99%

Meta-analysis of root-associated microbial communities of widely distributed native and invasive Poaceae plants in Antarctic.

Wang

Teng

et al. 2023

Preprint

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Deschampsia antarctica Desv. and Poa annua L. are two Poaceae plants with enough endurance to successfully establish populations in the Antarctic region. Their adaptation to the Antarctic environment is closely linked to root-associated microbial communities. In this study, we obtained 16S rRNA sequencing data of the root-associated microbial communities of these two Poaceae plants from NCBI. Meta-analysis was used to investigate the similarities and differences between the root-endosphere and rhizosphere-dwelling microbial communities in these two Poaceae plants. Here we report that two Poaceae-Poaceae plants’ rhizospheric communities were found to be more species diversity than endospheric communities. The species diversity of P. annua was higher than that of D. antarctica in both endosphere and rhizosphere communities. Seven bacterial families form a core microbiome of two Antarctic Poaceae plants’ root endosphere, in which Microbacteriaceae appears to be obligatory root endophytes of the two Antarctic Poaceae plants. The core microbiome of the two Poaceae plants' rhizosphere has six bacterial families. Chitinophagaceae, Burkholderiaceae, and Flavobacteriaceae are most likely to play a crucial role in Poaceae plants' adaptation to cold Antarctic conditions. Sphingobacteriaceae, Caulobacteraceae, Gemmatimonadaceae, and Flavobacteriaceae have a great influence on two Antarctic Poaceae plants.

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Bioprospecting from plant waste composting: Actinobacteria against phytopathogens producing damping-off

Cited by 13 publications

References 18 publications

Biopriming of cucumber seeds using actinobacterial formulas as a novel protection strategy against Botrytis cinerea

Biopriming of cucumber seeds using actinobacterial formulas as a novel protection strategy against Botrytis cinerea

Recombination of endophytic bacteria in asexual plant Ligusticum chuanxiong Hort. caused by transplanting

Meta-analysis of root-associated microbial communities of widely distributed native and invasive Poaceae plants in Antarctic.

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